The 18-year old, Yohandry Pupo Sarmiento, attempted suicide due to the pressure put on him by Castro's secret police.

Pupo would later confess the episode to Ferrer.

He was asked to poison Ferrer's food -- also putting Ferrer's wife and children at risk.See Pupo's full testimony (in Spanish) here.

"He was visited in the hospital by the agent who was his handler, a captain who called himself Leo, and he said to him: 'Why did you do this? Instead of trying to kill yourself you should try to kill Jose Daniel. Don't you want to leave the country? We can help get you out. This anger you have against yourself, turn it towards Jose Daniel and we will help you get out of here,'" Ferrer explained to Diario de Cuba.